# LED control via PX4

**URL:** <https://discuss.px4.io/t/led-control-via-px4/34361>\
**Category:** Uncategorized\
**Created:** [September 19, 2023, 10:11am UTC](https://discuss.px4.io/t/led-control-via-px4/34361 "2023-09-19T10:11:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![serkan](https://discuss.px4.io/user_avatar/discuss.px4.io/serkan/32/15385_2.png) [@serkan](https://discuss.px4.io/u/serkan)\
**Post date:** [September 19, 2023, 10:11am UTC](https://discuss.px4.io/t/led-control-via-px4/34361/1 "2023-09-19T10:11:29Z")

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Hi, I want to add external LEDs to the Holybro Pixhawk 4 (Discontinued) card and control these LEDs via ROS2, can this be done?